Land snails are invertebrates because they do not have a backbone. They are related to water snails, but they do not live in water.
EPTOMS Ozone (7-26-96 - 12-4-00)
This animation shows the total ozone as measured by Earth Probe TOMS since the earliest measurements by that instrument. Days on which no data was taken appear as blank.
A 3-Dimensional Model of the Magnetosphere (WMS)
The earths magnetosphere protects the earth from high-energy charged particles coming from the sun. Some charged particles are deflected by the magnetosphere, while others become trapped and produce the aurora. This presentation shows a 3-dimensional model of the magnetosphere. The features that it highlights are flat ribbons representing the paths of charged particles deflected by the magnetosphere, triangular ribbons representing magnetic field lines, and colored surfaces representing constant
Pearl River, China (with window)
Zoom down to land reclamation from the river delta. Dissolve between data collected in 1988, 1992, and 1995.
Ozone Layer Shielding Our Planet
An animation showing the ozone layer shielding our planet from the suns intense ultraviolet radiation. Ozone absorbs nearly all of the biologically damaging UV radiation from the sun.
1992 Daily Ozone from Nimbus-7
In this animation of total ozone, the luminance values of the colors bounding areas of missing data are used in interpolating over these regions. The missing data are mapped to the grayscale portion of the color map.
Clouds over Florida from GOES-11: August 4, 2000
This animation is one of a series showing the first data from GOES-11. The data shown was taken at one-minute intervals.
Ethics of Human Subject Research
Ethics of Human Subject Research (2 credits) is offered by the Department of Health Policy and Management and the Distance Education Division, Johns Hopkins Bloomberg School of Public Health and The Phoebe R. Berman Bioethics Institute, Johns Hopkins University. The course introduces students to the ethics of human subject research. Ethical theory and principles are introduced, followed by a brief history of research ethics. Topics covered in lectures and moderated discussions include informed c
Statistical Reasoning I
Statistical Reasoning in Public Health provides an introduction to selected important topics in biostatistical concepts and reasoning through lectures, exercises, and bulletin board discussions. It represents an introduction to the field and provides a survey of data and data types. Specific topics include tools for describing central tendency and variability in data; methods for performing inference on population means and proportions via sample data; statistical hypothesis testing and its appl
Problems in the Design of Epidemiologic Studies (Grant Writing)
Presents the methodologic and logistic problems involved in designing and conducting epidemiologic studies. Students participate in the preparation of a research protocol for a study in a human population. Offers an opportunity to critically evaluate the adequacy and scientific merit of research protocols, develop an appreciation of the ethical aspects of conducting research involving human subjects, and apply methods and principles learned in earlier (340.601 - 603) and current courses to speci
Emergent Materials II, Spring 2005
This course will focus on providing students with the tools needed to practice responsible architecture in a contemporary context. It will familiarize students with the materials currently used in responsible practice, as well as the material properties most relevant to assembly. The course will also introduce students to materials that are untested but hold promise for future usage. Finally, the course will challenge students to refine their understanding of responsible or sustainable design pr
Space Propulsion, Spring 2004
Reviews rocket propulsion fundamentals. Discusses advanced concepts in rocket propulsion ranging from chemical engines to electrical engines. Topics include: advanced mission analysis, physics and engineering of microthrusters, solid propellant rockets, electrothermal, electrostatic, and electro-magnetic schemes for accelerating propellant. Some coverage is given of satellite power systems and their relation to propulsion systems. Space Propulsion begins with a review of rocket propulsion fundam
What does keeping-up mean?
At the completion of this chapter you will be able to understand an article of a government campaign.
CESU 2011 – Table ronde : soins d’urgence.
Titre : CESU 2011 – Table ronde : soins d’urgence.
Intervenants : Pierre POLES, Christine AMMIRATI (Médecins anesthésistes au SAMU 73), Hervé DELPLANCQ (Médecin anesthésiste au SAMU 67), Pierre MOLS (Médecin urgentiste au CHU St Pierre de Bruxelles – Belgique), Claire Kam (CHU de Strasbourg).
Résumé : débat n°2. Etape pédagogique dans le cadre de l’enseignement des soins d’urgence. Table ronde.
L’auteur n’a pas transmis de conflit d’intérêt
Titre : CESU 2011 – Table ronde : soins d’urgence.
Morphological indicators of solar exposure
This paper investigates the relation between the shading condition and geometrical configuration of neighborhood-scale developments. It introduces a straightforward method for measuring shadow areas casted on buildings? roofs and facades ? in urban areas ? using digital 3D models. Employing this method for measuring shadow areas in nine neighborhoods in Jinan, China, at six different time points on summer and winter solstices ? a total of 54 sample measurements ? this study develops two regressi
Reading a newspaper online
In this task you will learn, step by step, how to write an email to send to the Customer Service Department of a newspaper.
playing with windows movie maker